StarDestroyer.Net BBS

I need a computer chair, and I know the Herman Miller Aerons are basically the best. However, they're also at least $500, and I've got no interest in paying that kind of money. So I ask you folks here, know of any 'cheaper' knock-offs that are at least in the same ballbark as the Aeron in terms of quality, I'm okay with spend 250 or so on a chair, but I'd like something that'll last. I've seen shitty $100 chairs that are similar to the Aeron in places like Staples and OfficeMax, but I definatly want to stay away from that really cheap stuff.

Anyone know any places, names, brands, etc.?

There was a great one that I saw for 250AU that was astoundingly comfortable (complete with mesh back to prevent back sweat etc). So beautiful and comfortable. I really want to get it.